KR20230168106A - Muti-fuctional loader of filter press with circulation type filter cloth - Google Patents

Abstract

The present invention is a filter cloth circulation comprising a plurality of filter plates installed in a frame forming the overall frame to be closed and open through forward and backward movement, and a filter cloth provided in a closed loop form and circulating through each of the spaced spaces between the filter plates in the open state. Provides a multi-functional cart for the filter press circulation filter press provided in the filter press. And the multi-function bogie of the filter cloth circulation filter press includes a bogie frame installed on the frame; A driving roller, a driving motor, and a tension maintaining means installed on the bogie frame; and a washing means. Here, the tension maintaining means includes a plurality of fixed rollers installed on the bogie frame to be aligned in the front-back direction; A lifting support installed on the bogie frame to be lifted up and down on the fixed rollers; A plurality of tension rollers installed on the lifting support to be arranged in the front-back direction; and a tension cylinder installed on the bogie frame to raise and lower the lifting support. And the cleaning means includes: a housing installed on the bogie frame and accommodating the fixing rollers therein; and a washing water spray pipe that is installed inside the housing and sprays washing water into a filter cloth that circulates around the fixing rollers and tension rollers.

Description

{MUTI-FUCTIONAL LOADER OF FILTER PRESS WITH CIRCULATION TYPE FILTER CLOTH}

The present invention relates to a multi-function cart for a filter cloth circulation filter press, which is provided to allow the closed loop type filter cloth to circulate.

Sewage discarded from homes or factories is sent to a sewage treatment plant and treated, and the sludge generated during this treatment process is treated through reduction processes such as concentration and dehydration. The dehydrator, which is one of the devices used in the sludge reduction process, separates filtrate from sludge and is classified into belt press, filter press, screw press, centrifugal dehydrator, and electric osmosis dehydrator depending on the operating principle.

The filter press separates the filtrate from the sludge by forcing sludge into a closed filter chamber provided between filter plates in a closed state (closed to each other), and then extracts the sludge from an open filter chamber between filter plates in an open state (separated from each other). This is a device that causes cake (dehydrated sludge) to fall freely.

Currently, one type of such filter press, the filter cloth circulation filter press, is known. In a filter cloth circulation filter press, the filter cloth is provided in a closed loop form passing between filter plates. In addition, in the closed plate state where dehydration occurs, the filter cloth does not circulate, and in the open plate state that occurs after dehydration is completed, the filter cloth circulates so that the section of the filter cloth used for dehydration escapes between the filter plates and at the same time, a new section of the filter cloth is located between the filter plates. do. When a new section of filter cloth is located between the filter plates, a closed plate state is formed again and then dewatering occurs.

The filter cloth circulation filter press described above is disclosed in Patent Publication No. 10-2002-0082047 (filter press) and Registered Patent Publication No. 10-2324708 (unmanned automatic tower type filter press device). In the above published patent publication, the filter plates are arranged in a horizontal direction, and in the above registered patent publication, the filter plates are arranged in a vertical direction.

Publication of Patent No. 10-2002-0082047 (Filter Press) Registered Patent Publication No. 10-2324708 (Unmanned automatic tower type filter press device)

The purpose of the present invention is to provide an improved filter cloth circulation filter press compared to the prior art, and in particular, a multi-functional bogie for the filter cloth circulation filter press.

The present invention is a filter cloth circulation comprising a plurality of filter plates installed in a frame forming the overall frame to be closed and open through forward and backward movement, and a filter cloth provided in a closed loop form and circulating through each of the spaced spaces between the filter plates in the open state. Provides a multi-functional cart for the filter press circulation filter press provided in the filter press. And the multi-function bogie of the filter cloth circulation filter press includes a bogie frame installed on the frame; A driving roller installed on the cart frame and used to circulate the filter cloth; A drive motor installed on the bogie frame to drive the drive roller; Tension maintaining means installed on the cart frame to maintain constant tension of the filter cloth when opening and closing the filter plates; and a cleaning means installed on the cart frame to clean the filter cloth. Here, the tension maintaining means includes a plurality of fixed rollers installed on the bogie frame to be aligned in the front-back direction; A lifting support installed on the bogie frame to be lifted up and down on the fixed rollers; A plurality of tension rollers installed on the lifting support to be arranged in the front-back direction; and a tension cylinder installed on the bogie frame to elevate and lower the elevating support. And the cleaning means includes: a housing installed on the bogie frame and accommodating the fixing rollers therein; and a washing water spray pipe that is installed inside the housing and sprays washing water into a filter cloth that circulates around the fixing rollers and tension rollers.

The tension cylinder raises the lifting support when the filter plates are closed and lowers the lifting support when the filter plates are opening.

According to the present invention, a driving roller and a driving motor for circulating the filter cloth, a tension maintaining means for maintaining the tension of the filter cloth constant when opening and closing the filter plates, and a cleaning means for cleaning the circulating filter cloth are all installed on the bogie frame. Therefore, there is no need to secure a separate place in the filter cloth circulation filter press for arranging the driving roller, driving motor, tension maintaining means, and washing means.

In addition, according to the present invention, the fixed rollers and tension rollers of the tension maintaining means are arranged up and down, and a part of the tension maintaining means (fixed rollers) is used as a cleaning means, so a separate cleaning means is installed on the bogie frame. There is no need to prepare a place.

Figure 1 is a perspective view showing a multi-filter cloth circulation filter press equipped with a multi-function bogie according to the present invention.
Figure 2 is a left side view of the multi-filter cloth circulation filter press shown in Figure 1.
Figure 3 shows a filter cloth installed in the multi-filter cloth circulation filter press of Figure 2.
Figure 4 is an enlarged left side view of the interior of the housing shown in Figure 2.
FIG. 5 is an actual photograph of a connecting link connecting the filter plates shown in FIG. 1 and a sludge supply member fixed to the connecting link, as viewed from the left.
Figure 6 is an actual photograph of the sludge supply member shown in Figure 5.
FIG. 7 is a perspective view showing the moving head shown in FIG. 1.
Figure 8 is a perspective view showing the back of the moving head shown in Figure 7.

Hereinafter, preferred embodiments of the multi-functional bogie of the filter cloth circulation filter press according to the present invention will be described in detail with reference to the drawings. The terms or words used below should not be construed as limited to their usual or dictionary meanings, and based on the principle that an inventor can appropriately define the concept of a term in order to explain his or her invention in the best way, It should be interpreted with meaning and concept consistent with the technical idea of the present invention.

Below, the multi-function carts (200a, 200b) according to the present invention will be described as an example, taking the case where the multi-function carts (200a, 200b) are installed in the multi-filter cloth circulation filter press (100), and the multi-function carts (200a, 200b) will be clearly understood. To this end, not only the multi-functional carts (200a and 200b) but also the multi-filter cloth circulation filter press (100) will be described in detail.

The multi-filter cloth circulation filter press 100 on which the multi-function carts 200a and 200b according to the present invention are installed, as shown in Figures 1 and 2, includes a frame 110, a front plate 112, and a rear plate 114, It includes a first dehydration module (D1) and a second dehydration module (D2).

The frame 110 is a member that forms the overall frame. The front plate 112 is fixedly installed at the front end of the frame 110, and the back plate 114 is fixedly installed at the rear end of the frame 110. The first dehydration module (D1) is a dehydration module located close to the front plate 114, and the second dehydration module (D2) is a dehydration module located behind the first dehydration module (D1). Dehydration modules D1 and D2 are installed on the frame 110. Below, the dewatering modules (D1, D2) including the multi-function carts (200a, 200b) according to the present invention will be described in detail, taking as an example the case where the left and right sides are set based on when looking from the rear to the front. do.

< Middle plate (130a, 130b) >

As shown in Figure 2, the first dehydration module (D1) and the second dehydration module (D2) include a first intermediate plate (130a) and a second intermediate plate (130b), respectively. The first middle plate 130a is installed on the frame 110 to be able to move forward and backward from the rear of the front plate 112, and the second middle plate 130b is installed to be able to move forward and backward from the rear of the first middle plate 130a. It is installed on the frame 110.

As shown in FIG. 2, a pair of first intermediate plate cylinders 150 are installed in the frame 110 so as to be spaced apart in the left and right directions, and the first intermediate plate 130a is connected to the first intermediate plate cylinders 150. ) is combined with the cylinder rod. Therefore, when the first intermediate plate cylinder 150 operates, the first intermediate plate 130a moves forward and backward. A hydraulic cylinder is used as the first intermediate plate cylinder 150.

< Filter plate (120a, 120b) >

As shown in Figures 1 and 2, the first dewatering module (D1) includes a plurality of first filter plates (120a), and the second dewatering module (D2) includes a plurality of second filter plates (120b). . The first filter plates 120a are arranged in parallel between the front plate 112 and the first middle plate 130a, and the second filter plates 120b are arranged in parallel between the first middle plate 130a and the second middle plate 130b. are listed neatly. The left and right ends of the filter plates 120a and 120b are slidably coupled to the frame 110. Therefore, the first filter plates 120a can move forward and backward between the front plate 112 and the first middle plate 130a, and the second filter plates 120b can move between the first middle plate 130a and the second middle plate 130b. You can move forward and backward in between.

At the top of each filter plate (120a, 120b), upper guide rollers (122a, 122b) extending in the left and right directions are rotatably provided. And at the bottom of each filter plate (120a, 120b), lower guide rollers (124a, 124b) extending in the left and right directions are rotatably provided. In addition, at the top of each filter plate (120a, 120b), contact prevention guide rollers (126a, 126b) are provided one at a time to be rotatable in an attitude extending in the left and right directions. The diameters of the anti-contact guide rollers 126a and 126b and the diameters of the lower guide rollers 124a and 124b are provided to be larger than the thickness of the filter plates 120a and 120b in the front and rear direction, which means that the filter cloths 160a and 160b are open plates. This is to avoid contact with the filter plates (120a, 120b) when circulating between the filter plates (120a, 120b).

As shown in FIG. 5, in the first dewatering module (D1), the left and right sides of adjacent filter plates (120a) are connected by a first connection link (180a), and the left and right sides of the rearmost filter plate (120a) are connected to each other. The side and left and right sides of the first middle plate 130a are also connected to the first connection link 180a. Likewise, in the second dewatering module (D2), the left and right sides of adjacent filter plates (120b) are connected by a second connection link (180b), and the left and right sides of the rearmost filter plate (120b) and the second middle plate are connected to each other. The left and right sides of (130b) are also connected to the second connection link (180b). In addition, the left and right sides of the frontmost filter plate (120b) of the second dewatering module (D2) and the left and right sides of the first intermediate plate (130a) are also connected to the second connection link (180b), thereby connecting the first dewatering module (D1) and the second dewatering module (D1). Module (D2) is connected. For reference, the connection links 180a and 180b are omitted in FIGS. 1 and 2.

As shown in Figure 5, each connecting link (180a, 180b) is a front part (182a, 182b) and a back part (186a, 186b), and an intermediate link connecting these two parts (182a, 182b) (186a, 186b). Includes regions 184a and 184b. Front long holes extending in the anteroposterior direction are formed in the front portions 182a and 182b, and rear long holes extending in the anteroposterior direction are also formed in the rear portions 186a and 186b. And on the left side of each filter plate (120a, 120b), front long hole protrusions (183a, 183b) and rear long hole protrusions (187a, 187b) are formed, and upper protrusions (183a, 183b) (187a, 187b) are formed on the right side. ) is formed. The protrusions (183a, 183b) for the front intestines of the front filter plates (120a, 120b) are inserted into the upper anterior intestinal holes formed in the front portions (182a, 182b), and the upper and rear intestinal holes formed in the rear portions (186a, 186b) are inserted into the upper anterior intestinal holes (183a, 183b). The protrusions (187a, 187b) for the rear long holes of the filter plates (120a, 120b) are inserted, and after these insertions are made, the pins (188a, 188b) are fastened to the protrusions (183a, 183b) (187a, 187b) to form a connecting link. (180a, 180b) is prevented from leaving.

When the first intermediate plate cylinder 150 pulls the first intermediate plate 130a in a state in which the filter plates 120a and 120b are all open (state of FIGS. 1 and 2), the first intermediate plate 130a moves forward and 1. The filter plates 120a are closed. And the second filter plates 120b move forward while being led by the first intermediate plate 130a while maintaining the open state. When the advance of the first intermediate plate 130a is completed, the second intermediate plate 130a advances and closes the second filter plates 120b.

When the second intermediate plate 130b moves backward in a state in which the filter plates 120a and 120b are all closed in the same manner as above (not shown), the second filter plates 120b move backward one after another and are opened. And the second intermediate plate (130b) continues to move backwards while leading the second filter plates (120b) even after all of the second filter plates (120b) are opened. At this time, the first intermediate plate cylinder 150 is connected to the first intermediate plate (130a). The first intermediate plate 130a is pushed backwards, and the first filter plates 120a are opened while moving backwards one by one by the backward first intermediate plate 130a.

< Filter cloth (160a, 160b) >

As shown in FIG. 3, the first dehydration module (D1) includes a first filter cloth (160a) in a closed loop shape, and the second dehydration module (D2) is separated from the first filter cloth (160a) and positioned independently. It includes a second filter cloth (160b) in the form of a closed loop.

When the first filter plates 120a are in an open state, separation spaces are formed between the first filter plates 120a, and the first filter cloth 160a is a lower guide of the first filter plate 120a located behind each separation space. After sequentially winding the roller 124a and the upper guide roller 122a, it is disposed in each space by winding around the lower guide roller 124a of the first filter plate 120a located in front of each space. . Accordingly, in each space, the first filter cloth 160a is arranged in two layers, and the two layers form a first filter chamber in which sludge is pressurized and dewatered in a closed plate state.

When the second filter plates 120b are in an open state, separation spaces are formed between the second filter plates 120b, and the second filter cloth 160b is located at the bottom of the second filter plate 120b behind each of these separation spaces. After sequentially winding the guide roller (124b) and the upper guide roller (122b), the lower guide roller (124b) of the second filter plate (120b) located in front of each space is wound around and placed in each space. do. Therefore, in each space, two layers of second filter cloth 160b are arranged, and the two layers form a second filter chamber in which sludge is pressurized and dewatered in a closed plate state.

< Sludge press-in and dewatering >

Previously, it was explained that the connection links (180a, 180b) have front portions (182a, 182b), rear portions (186a, 186b), and middle portions (184a, 184b), and the middle portions (184a, 184b) are shown in Figure 5. As shown, the sludge supply members 170a and 170b are detachably coupled in an upright state.

The sludge supply member 170a of the first dewatering module D1 is tightly sandwiched between the first filter plates 120a in the closed plate state, and at this time, the inner end of the sludge supply member 170a (sludge supply member 170a) If located on the left, it means the right end, and if located on the right, it means the left end] is tightly sandwiched between two layers of the first filter cloth (160a) forming the first filter chamber. Likewise, the sludge supply member (170b) of the second dewatering module (D2) is tightly sandwiched between the second filter plates (120b) in the closed plate state, and at this time, the inner end of the sludge supply member (170b) is in the second filtering chamber. It is tightly sandwiched between the two layers of the forming second filter cloth (160b).

As shown in FIG. 6, the sludge supply members 170a and 170b have one front and rear through hole 172a and 172b and a plurality of left and right through holes 174a and 174b. Figure 6 shows sludge supply members (170a, 170b) having three left and right through holes (174a, 174b).

At the left and right ends of each filter plate (120a, 120b), sludge injection holes (128a, 128b) are opened in the front-back direction as shown in FIG. 1, and the front-back holes (172a, 172b) are used in the closed plate state (172a, 172b). ) The sludge injection holes 128a and 128b located before and after are communicated. And the left and right apertures 174a of the sludge supply member 170a provided in the first dewatering module (D1) communicate with the above front and rear apertures 172a and the first filtering chamber in the closed state, and are connected to the second dewatering module (D2). The left and right apertures 174b of the sludge supply member 170b communicate with the upper front and rear apertures 172b and the second filtering chamber in the closed state.

Therefore, when sludge is injected into the first sludge injection pipe 142a (see FIGS. 1 and 2) formed at the left and right ends of the front plate 112 in a closed plate state, the sludge is injected into the sludge injection holes 128a and the front and rear through holes 172a. It moves backward along and at the same time moves to each first filtering room through the left and right through holes 174a in each sludge supply member (170a). And while this state is maintained for a predetermined time, dewatering of the sludge is performed in the first dewatering module (D1). Similarly, when sludge is injected into the second sludge injection pipe 142b (see FIG. 2) formed at the left and right ends of the second middle plate 130b in the closed plate state, the sludge is injected into the sludge injection holes 128b and the front and rear through holes 172b. ), and at the same time, each sludge supply member (170b) moves to each second filtering room through the left and right through holes (174b). And while this state is maintained for a predetermined time, dewatering of the sludge is performed in the second dewatering module (D2).

While dewatering is taking place, the filtrate contained in the sludge in the first filter chamber passes through the two-layer first filter cloth (160a) forming the first filter chamber and passes through the surface protrusions ( (not shown), the dehydrated sludge (i.e., sludge cake) separated from the filtrate remains in the first filter chamber. And the filtrate flows down to the first drain pipes 144a (FIG. 1 and 2) and is discharged to the outside.

Likewise, while dewatering is taking place, the filtrate containing sludge in the second filter chamber passes through the two-ply first filter cloth (160b) forming the second filter chamber and passes through the surfaces provided on the front and back sides of the second filter plates (120b). It flows down between the protrusions (not shown), and the sludge cake remains in the second filter chamber. And the filtrate flows down to the second drain pipes 144b formed at the left and right ends of the second intermediate plate 130b along filtrate drain holes (not shown) provided at the lower left and right ends of each second filter plate 120b and communicating with each other in the closed plate state. (see Figure 2) and is discharged to the outside.

Meanwhile, it was previously explained that sludge is supplied to the first filter chamber through the first sludge injection pipe 142a and to the second filter chamber through the second sludge injection pipe 142b, but the sludge is supplied to the two sludge injections. It may be supplied to both the first and second auxiliary chambers through only one of the pipes 142a and 142b.

In this case, as shown in FIG. 2, sludge passage pipes 132a are installed on the left and right sides of the first intermediate plate 130a, and the second sludge injection pipe 142b or the first sludge injection pipe 142a is sealed. do. In the closed state, the sludge passage pipe 132a communicates with the sludge injection hole 128a of the rearmost first filter plate 120a and also communicates with the sludge injection hole 128b of the frontmost second filter plate 120b. Therefore, when the second sludge injection pipe (142a) is sealed, the sludge injected into the first sludge injection pipe (142a) is not only supplied to the first filter room, but also passes through the sludge passage pipe (132a) to the second filter room. will also be supplied. If the first sludge injection pipe (142a) is sealed, the sludge injected into the second sludge injection pipe (142b) is not only supplied to the second filter room, but also to the first filter room after passing through the sludge passage pipe (132a). will be supplied.

< Multi-functional cart (200a, 200b) >

The first dehydration module (D1) and the second dehydration module (D2) include a first multi-function cart (200a) and a second multi-function cart (200b), which are one form of the present invention.

The first multi-function truck 200a includes a first truck frame 202a, and the second multi-function truck 200a includes a second truck frame 202b, and these truck frames 202a and 202b are positioned in the front-to-back direction. It is installed on the frame so that it can be driven. And, as shown in FIG. 7, the second bogie frame 202b is provided with a transverse member 204b having a cross-sectional shape of “ㄷ”, and this transverse member 204b is fixed to the second intermediate plate 130b. Therefore, the second multi-function bogie (200b) moves forward and backward together with the second intermediate plate (130b). Likewise, the first bogie frame 202a is also fixed to the first intermediate plate 130a via a transverse member (not shown) identical to the above transverse member 204b, and as a result, the first multi-function bogie 100a is It moves forward and backward together with the first plate (130a).

A first driving roller 212a for circulating the first filter cloth 160a is installed on the first bogie frame 202a, and a first driving motor 214a for driving the first driving roller 212a (Figure 2) is also installed. A second drive roller 212b for circulating the second filter cloth 160b is installed on the second bogie frame 202b, and a second drive motor 214b for driving the second drive roller 212b (Figure 2) is also installed.

In addition, a first tension maintaining means, a first cleaning means, and a first skew correction means are installed in the first bogie frame 202a, and a second tension maintaining means and a second cleaning means are also installed in the second bogie frame 202b. and a second meander correction means is installed.

The second tension maintaining means is installed on the second bogie frame (202b) to be located between the second driving roller (212b) and the second intermediate plate (130b), and has a plurality of second fixing rollers (221b) as shown in FIG. 4. ) and a plurality of second tension rollers 222b. The second filter cloth (160b) wound around the second driving roller (212b) alternately rotates around the second fixed roller (221b) and the second tension roller (222b). Figure 4 illustrates three second fixing rollers 221b and two second tension rollers 222b.

The second fixed rollers 221b extend in the left and right directions, are arranged in parallel in the front and rear directions, and are rotatably coupled to the second bogie frame 202b. The second tension rollers 222b extend in the left and right directions, are arranged in parallel in the front and rear directions, and are rotatably coupled to a pair of second lifting supports 223b spaced apart in the left and right directions. A pair of second elevating supports (223b) are coupled to the second bogie frame (202b) so as to be able to go up and down, and are secondly fixed by a second tension cylinder (224b) installed on the second bogie frame (202b). It goes up and down at the upper part of the rollers 221b.

The second tension cylinder 224b is controlled to raise the second lifting support 223b when the second middle plate 130b is advanced, and to lower the second lifting support 223b when the second middle plate 130b is moving backward. This allows the tension of the second filter cloth (160b) to be maintained constant when opening (backward) and closing (forward) the second filter plates (120b).

Meanwhile, the first tension maintaining means is also the same as the second fixing roller (221b), the second tension roller (222b), the second lifting support (223b), and the second tension cylinder (224b) on the second tension maintaining means. It includes a first fixing roller (221a), a first tension roller (222a), a first lifting support (223a), and a first tension cylinder (224a).

The second washing means is for washing the circulating second filter cloth (160b), and includes a second housing (232b) and a plurality of second washing water spray pipes (234b) as shown in FIGS. 1 to 3. do.

The second housing (232b) is fixed to the second bogie frame (202b) and accommodates the second fixing rollers (221b) therein. The second washing water spray pipes 234b are positioned inside the second housing 232b parallel to each other while extending left and right. From the second washing water injection pipes (234b), the washing water is sprayed to the second filter cloth (160b) that circulates around the second fixed rollers (221b) and the second tension rollers (222b), and at this time, the second filter cloth (160b) The sludge remaining in 160b) is removed from the second filter cloth 160b and falls to the bottom of the second housing 232b together with the washing water. A drain (not shown) for draining used washing water is formed on the bottom or side of the second housing 232b.

The first washing means is for washing the circulating first filter cloth (160a), and the first housing (232a) and the first washing water spray pipe are the same as the second housing (232b) and the second washing water spray pipe (234b). Includes (234a).

Meanwhile, the first washing means and the second washing means may be provided in various known forms other than the above. For example, the first cleaning means and the second cleaning means may be configured like the ultrasonic cleaning device disclosed in Patent Registration No. 10-2313179.

The second skew correction means is installed on the second bogie frame 202b to be located between the second drive roller 212b and the second tension maintenance means to correct the skew of the second filter cloth 160b, Figure 4 As shown, a pair of second meandering detection sensors (not shown), a pair of second correction rollers (241b), a pair of second rotary tables (242b), and a pair of second bearings (243b) , includes a pair of second reciprocating blocks (244b) and a pair of second pneumatic cylinders (246b).

The second meandering detection sensors (not shown) are located behind the second driving roller 212b, on the left and right sides of the second filter cloth 160b, and are fixed to the second bogie frame 202b.

The second calibration rollers 241b are arranged parallel to each other in the direction of travel of the second filter cloth 160a behind the second meander detection sensors and extend in the left and right directions. As shown in FIG. 3, the second filter cloth (160a) circulates through the lower part of the front second calibration roller (241b), between both second calibration rollers (241b), and the upper part of the rear second calibration roller (241b). .

The second rotation tables 242b are rotatably coupled to the left and right ends of the second calibration rollers 241b. And the second rotary tables 242b are arranged to form a rearward upward slope that increases as it goes backwards. The second bearings 243b support the second rotary tables 242b and can rotate about an axis extending in a direction perpendicular to the second rotary table 242b.

The second reciprocating blocks 244b support the second bearings 243b and are coupled to the second brackets 245b so that they can reciprocate in the backward and upward inclined direction. The second brackets 245b are fixed to the second bogie frame 202b. The second pneumatic cylinders 246b are fixed to the second brackets 245b and reciprocate the second reciprocating blocks 244b.

The first skew correction means is installed on the first bogie frame 202a to be positioned between the first drive roller 212a and the first tension maintenance means to correct the skew of the first filter cloth 160a, and the second Meandering detection sensors (not shown), second correction rollers (241b), second rotation tables (242b), second bearings (243b), second reciprocating blocks (244b), and second pneumatic cylinders ( 246b), a pair of first meander detection sensors (not shown), a pair of first correction rollers (241a), a pair of first rotary tables (242a), a pair of first bearings (243a), It includes a pair of first reciprocating blocks (244a) and a pair of first pneumatic cylinders (246a).

When the filter cloths (160a, 160b) circulate along a relatively long path, as in the filter cloth circulation filter press (100), the filter cloths (160a, 160b) may meander, and then the filter cloths (160a, 106b) detect the two meander detection sensors. One of (not shown), for example, comes into contact with the meandering detection sensor on the left. And as in this example, when the filter cloth (160a, 160b) contacts the meandering detection sensor on the left, the pneumatic cylinders (246a, 246b) on the right immediately operate to advance the right ends of the straightening rollers (241a, 241b), thereby causing the filter cloth to The meandering of the filter cloth (160a, 160b) is corrected by correcting the meandering of the filter cloth (160a, 160b), or the pneumatic cylinders (246a, 246b) on the left side operate to retract the left ends of the correction rollers (241a, 241b).

Meanwhile, it was previously explained that the first bogie frame 202a is fixed to the first intermediate plate 130a so that the first multi-function bogie 100a moves forward and backward together with the first intermediate plate 130a. However, unlike this, the first bogie frame 202a may be fixed to the frame 110. In this case, the first multi-function bogie (100a) does not move forward and backward, and only the first intermediate plate (130a) moves forward and backward.

<Moving head (300)>

As shown in FIG. 7, the moving head 300 is installed on the frame 110 so that it can move forward and backward between the second middle plate 130b and the back plate 114. And the main cylinder 305 is fixed to the moving head 300, and the cylinder rod of the main cylinder 305 is coupled to the second intermediate plate 130b. Therefore, when the moving head 300 moves forward and backward while the main cylinder 305 is not operating, or when the main cylinder 305 operates while the moving head 300 is stopped, the second intermediate plate 130b moves forward and backward. Jin will be held. A hydraulic cylinder is used as the main cylinder 305.

A pair of pinions 302 positioned apart in the left and right directions are rotatably coupled to the moving head 300, and a pinion motor 304 is installed to rotate the pinions 302. 7 and 8 illustrate a pair of pinion motors 304 for rotating each of the pair of pinions 302, but only one pinion motor 304 may be provided, in which case a pair of pinion motors 304 may be provided. (302) are connected to each other and rotate simultaneously by one pinion motor (304). The moving head 300 may be provided with a pair of support rollers 303 that roll in contact with the upper surface of the frame 110.

A pair of racks 301 located apart in the left and right directions are fixed to the frame 110, and a pinion 302 is engaged with these racks 301. Therefore, when the pinion 302 rotates, the moving head 300 moves forward and backward, and when the moving head 300 moves forward and backward, the second intermediate plate 130b connected to the moving head 300 through the main cylinder 305 also moves. It moves forward and backward with the moving head (300).

The second intermediate plate 130b is located at the rear when all of the filter plates 120a and 120b are open, and is located at the forefront when all of the filter plates 120a and 120b are closed. Therefore, if the main cylinder 305 is fixed to the back plate 114, the stroke of the main cylinder 305 must be as long as the distance between the rearmost position and the frontmost position of the second middle plate 130b, so the main cylinder 305 The length of is bound to be long. In particular, there is a problem that the length of the main cylinder 305 must become longer as the sludge dewatering capacity is increased by increasing the number of filter plates 120a and 120b or providing three or more dewatering modules.

However, as described above, when the main cylinder 305 is installed on the moving head 300, the front and rear positions of the main cylinder 305 can be changed by the moving head 300, so that the filter plates 120a and 120b are changed. Even if the number or number of dewatering modules increases, there is no need to lengthen the stroke of the main cylinder 305. Therefore, the sludge dewatering capacity can be increased without limit by increasing the number of filter plates 120a, 120b or the number of dewatering modules as necessary. You can.

When the moving head 300 as described above is provided, the moving head 300 advances to a preset forward position and then the main cylinder 305 strongly presses the second intermediate plate 130b forward to filter the filter plates 120a and 150b. ) is firmly maintained in the closed plate state, and at this time, the moving head 300 is strongly pressed backward due to the reaction of the force applied by the main cylinder 305 to the second intermediate plate 130a. Therefore, in the present invention, a pair of locking means is installed symmetrically on the moving head 300. Prevents the moving head 300 from being pushed backward when the main cylinder 305 operates.

Each locking means may include a locking cylinder 311, a locking block 312, and a guider 313, as shown in FIG. 8. The lock cylinder 311 is installed on a bracket fixed to the back of the moving head 300. The lock block 312 is fixed to the cylinder rod of the lock cylinder 311 and reciprocates between the locked position and the unlocked position when the lock cylinder 311 operates. The guider 313 is fixed to the back of the moving head 300 and guides the locking block 312 in reciprocation.

When the moving head 300 is placed in the forward position, a locking groove (not shown) is formed in advance on the portion of the frame 110 facing the locking block 312, and this locking groove is in the unlocked position. The locking block 312 moved to the locking position is inserted, and this prevents the moving head 300 from being pushed back even when the main cylinder 305 operates.

Meanwhile, it was previously explained that the moving head 300 is located at the rear of the second intermediate plate 130b, and this is because the second dehydration module D2 is the dehydration module located at the rearmost. Therefore, if a third dehydration module (not shown) is added to the rear of the second dehydration module (D2), the moving head 300 is located behind the middle plate provided in the third dehydration module. The same applies to the case where the fourth dehydration module, the fifth dehydration module, etc. are added in the same manner.

<Operation of the multi-filter cloth circulation filter press (100)>

Hereinafter, the operating process of the above-described multi-filter cloth circulation filter press 100 will be described.

First, when the filter plates 120a and 120b are open, the first intermediate plate cylinder 150 operates and the first intermediate plate 130a advances, and then the first filter plates 120a move toward the first intermediate plate 130a. The plates are closed by being sequentially pushed forward, and the second filter plates 120b move forward while being drawn by the first middle plate 130a while maintaining the open state. While this process is taking place, the moving head 300 also moves forward at a preset speed. And while the first intermediate plate 130a is closed, the first tension cylinder 224a raises the first lifting support 223a.

After the first filter plates 120a are closed, the moving head 300 moves forward to a preset forward position, and then the second intermediate plate 130a is pushed forward by the moving head 300, and the second filter plates 120a ) is closed. While the second filter plates 120a are closed in this way, the hydraulic pressure of the main cylinder 305 is maintained constant, and the second tension cylinder 224b raises the second lifting support 223b.

The moving head 300 stops moving forward when it reaches the forward position, and when the moving head 300 stops, the locking block 312 is inserted into the locking groove of the frame 110. Afterwards, the hydraulic pressure of the main cylinder 305 increases and the main cylinder 305 strongly presses the second intermediate plate 130b, thereby ensuring that the closed plate state of the filter plates 120a and 120b is maintained.

After this process is completed, dewatering is performed by forcing the sludge into the first and second filter chambers for a preset dewatering time. And while dewatering is taking place, the filtrate is drained through the drain pipes 144a and 144b, and the sludge cake remains in the first filter chambers and the second filter chambers.

When the dehydration time ends, the hydraulic pressure of the main cylinder 305 decreases and then remains constant, and the locking block 312 is pulled out from the locking groove of the frame 110. Afterwards, the moving head 300 moves backward, and then the second intermediate plate 130b also moves backward by the moving head 300, and the second filter plates 120b from the closed state become open, and in this process, the second filter plates 130b are moved backward by the moving head 300. My sludge cake is in free fall. And while the second filter plates 120b are opened, the second tension cylinder 224b lowers the second lifting support 223b.

After the second filter plates 120b are opened, the second driving roller 212b rotates so that the second filter cloths 160b circulate a preset distance, and in this process, the second filter cloths 160b used for dewatering The section of the second filter cloth (160b) is washed via the second washing means, and the section of the second filter cloth (160b) that was not used for dehydration is located between the second filter plates (120b). If the circulating second filter cloth (160b) meanderes, the meandering of the second filter cloth (160b) is corrected by the second meander correction means.

When cleaning of the second filter cloth 160b is completed, the first intermediate plate cylinder 150 moves the first intermediate plate 130a backward and the moving head 300 also moves backward, and then the second filter plates 120b are in an open state. As it moves backwards, the closed first filter plates 120a are opened, and in this process, the sludge cake in the first filter chambers falls freely. And while the first filter plates 120a are being opened, the first tension cylinder 224a lowers the first lifting support 223a.

After the first filter plates 120a are opened, the first driving roller 212a rotates so that the first filter cloth 160a circulates a preset distance, and in this process, the first filter cloth 160a used for dewatering The section of the first filter cloth (160a) is washed via the first washing means and the section of the first filter cloth (160a) that was not used for dehydration is located between the first filter plates (120). If the circulating first filter cloth (160a) meanders, the meandering of the first filter cloth (160a) is corrected by the first meander correction means.

Afterwards, the filter plates 120a and 120b are closed again and dewatering is performed using the method described above.

Meanwhile, unlike previously described, washing of the filter cloths 160a and 160b may be performed after both the first filter plates 120a and the second filter plates 120b are opened.

Additionally, unlike previously described, the opening and closing of the first filter plates 120a and the opening and closing of the second filter plates 120b may be performed alternately. In this case, in the initial state in which the first filter plates 120a are open and the second filter plates 120b are closed, the first intermediate plate cylinder 150 moves the first intermediate plate 130a backward. The first filter plates 120a are closed and the second filter plates 120b are opened. Afterwards, the moving head 300 moves forward and the second filter plates 120b are also closed. When dehydration is completed, the moving head 300 moves backwards, and at this time, the second filter plates 120b are opened. Thereafter, the first intermediate plate cylinder 150 moves the first intermediate plate 130a backward and the moving head 300 maintains a stopped state. Then, the second filter plates 120b in the open state are closed and simultaneously in the closed state. The first filter plates 120a are opened.

In the case where the open and closed plates of the first filter plates (120a) and the open and closed plates of the second filter plates (120b) are alternately formed as above, the length of the multiple filter cloth circulation filter press (100) in the front and rear direction is equal to that of all the filter plates ( 120a, 120b may be long enough to allow the opening of the first filter plates 120a and the closing of the second filter plates 120b, or the closed plate of the second filter plates 120a and the second filter plates. It is okay for a modification of (120b) to occur.

<Variation example>

Previously, it was explained that the multi-function carts (200a, 200b) according to the present invention are installed in the multi-filter cloth circulation filter press (100) having a plurality of dewatering modules (D1, D2). However, the multi-function cart (200a, 200b) according to the present invention can be applied to a single filter cloth circulation filter press having only one dewatering module, for example, a filter cloth circulation filter press without a second dewatering module (D2) in a multiple filter cloth circulation filter press (100). Can be installed. In this case, like the first bogie frame 202a, the bogie frame may be fixed to the middle plate and provided to move forward and backward together with the middle plate, or may be separated from the middle plate and fixed to the frame 112.

As described above, although the present invention has been described with limited examples and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following will be understood by those skilled in the art to which the present invention pertains. Of course, various modifications and variations can be made within the scope of equivalency of the claims to be described, and the above-described embodiments can be combined in various ways.

100: Multiple filter cloth circulation filter press D1, D2: Dehydration module
110: frame 112: front plate
114: back plate 120a, 120b: filter plate
130a, 130b: middle plate 132a: sludge passage pipe
160a, 160b: Filter cloth 170a, 170b: Sludge supply member
172a, 172b: Front and rear through hole 174a, 174b: Left and right through hole
180a, 180b: Connection link 182a, 182b: Front part
183a, 183b: Protrusion for front long hole 184a, 184b: Middle area
186a, 186b: Rear area 187a, 187b: Protrusion for rear long hole
200a, 200b: Multi-function bogie 202a, 202b: Bogie frame
212a, 212b: driving roller 214a, 214b: driving motor
221a, 221b: Fixed roller 222a, 222b: Tension roller
223a, 223b: Elevating support 224a, 224b: Tension cylinder
232a, 232b: Housing 234a, 234b: Washing water spray pipe
241a, 241b: straightening roller 242a, 242b: rotary table
243a, 243b: Bearing 244a, 244b: Reciprocating block
245a, 245b: Bracket 246a, 246b: Pneumatic cylinder
300: moving head 301: rack
302: pinion 304: motor for pinion
305: main cylinder 311: lock cylinder
312: lock block

Claims (2)

A filter press is provided with a plurality of filter plates installed to close and open in a forward and backward manner on the frame that forms the overall frame, and a filter cloth that is provided in a closed loop and circulates through each of the spaced spaces between the open filter plates. As it becomes,
A bogie frame installed on the frame;
A driving roller installed on the cart frame and used to circulate the filter cloth;
A drive motor installed on the bogie frame to drive the drive roller;
Tension maintaining means installed on the cart frame to maintain constant tension of the filter cloth when opening and closing the filter plates; and
It includes a cleaning means installed on the cart frame to clean the filter cloth,
The tension maintaining means is,
A plurality of fixed rollers installed on the bogie frame to be aligned in the front and rear directions;
A lifting support installed on the bogie frame to be lifted up and down on the fixed rollers;
A plurality of tension rollers installed on the lifting support to be arranged in the front-back direction; and
It includes a tension cylinder installed on the bogie frame to raise and lower the elevating support,
The cleaning means is,
a housing installed on the bogie frame to accommodate the fixing rollers therein; and
A multi-function bogie for a filter cloth circulation filter press including a washing water spray pipe installed inside the housing and spraying washing water into the filter cloth that circulates around the fixing rollers and tension rollers. According to paragraph 1,
The tension cylinder is a multi-function bogie of a filter cloth circulation filter press that raises the lifting support when the filter plates are closed and lowers the lifting support when the filter plates are opened.